How to Number Threads on X (Step by Step)

The fastest way to number threads on X/Twitter is The Threadinator. This Chrome extension automatically adds thread numbers and keeps them accurate when your post count changes.

Step-by-step guide

  1. 1. Install The Threadinator from the Chrome Web Store

    Add The Threadinator to Chrome (or any Chromium-based browser) and pin it so you can open it quickly.

  2. 2. Open your thread draft on X/Twitter

    Create your thread in the X composer and finish writing your posts before numbering for best results.

  3. 3. Click "Add Numbering" once

    The extension injects numbering like 1/10, 2/10, and 3/10 across the full thread automatically.

  4. 4. Edit safely and re-run numbering

    After adding or removing posts, run Add Numbering again to update every index and keep your thread accurate.

The Threadinator adding post numbers to an X thread draft

FAQ

Can I number existing threads or only new drafts?
You can number existing drafts and update thread numbers after edits by clicking Add Numbering again.
Does this work only in Google Chrome?
The Threadinator works in Chromium-based browsers including Chrome, Edge, Brave, and Opera.
What numbering format does the extension use?
The Threadinator uses the format "number/number " so it can detect and update numbering reliably in future runs.